The Prestigio RoadRunner 520i really is the smallest among all Full HD car DVRs. It only weighs 60 grams is equipped with a built-in 2.0 inch display and removable battery 500 mAh that allows you to record video independently without connection to the car outlet. The RoadRunner 520i includes a number of functions such as motion detection technology night mode start-up engine automatic recording electronic image stabilisation digital zoom and others to give the best recording results and convenience in use.